材料科学
聚酰亚胺
石墨烯
纳米复合材料
复合材料
气凝胶
假弹性
辅助
形状记忆合金
氧化物
弹性体
纳米技术
马氏体
微观结构
冶金
图层(电子)
作者
Yuyang Qin,Qingyu Peng,Yujie Ding,Zaishan Lin,Chunhui Wang,Ying Li,Fan Xu,Jianjun Li,Ye Yuan,Xiaodong He,Yibin Li
出处
期刊:ACS Nano
[American Chemical Society]
日期:2015-08-24
卷期号:9 (9): 8933-8941
被引量:694
标识
DOI:10.1021/acsnano.5b02781
摘要
The creation of superelastic, flexible three-dimensional (3D) graphene-based architectures is still a great challenge due to structure collapse or significant plastic deformation. Herein, we report a facile approach of transforming the mechanically fragile reduced graphene oxide (rGO) aerogel into superflexible 3D architectures by introducing water-soluble polyimide (PI). The rGO/PI nanocomposites are fabricated using strategies of freeze casting and thermal annealing. The resulting monoliths exhibit low density, excellent flexibility, superelasticity with high recovery rate, and extraordinary reversible compressibility. The synergistic effect between rGO and PI endows the elastomer with desirable electrical conductivity, remarkable compression sensitivity, and excellent durable stability. The rGO/PI nanocomposites show potential applications in multifunctional strain sensors under the deformations of compression, bending, stretching, and torsion.
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